//pages/myself/address/address.js
var network = require('../../../utils/network_util.js');
var api = require('../../../utils/api.js');
//var start = 0;

Page({

  /**
   * 页面的初始数据
   */
  data: {
    startX: 0, //开始坐标
    startY: 0,
    recordsTotal: 0,
    items: [],
    selected: false
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    wx.setNavigationBarTitle({
      title: "我的地址",
    })
    console.log(options);
    this.setData({
      selected: options.selected
    })
    this.onPullDownRefresh();
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {
    // start = 0;
    wx.stopPullDownRefresh();
    this.setData({
      items: [],
    });
    network._post_json(this, api.getAddressList, {}, success);
  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {
    // if (this.data.items.length < this.data.recordsTotal) {
    //   start = start + 20;
    //   network._post_page_json(this, api.getAddressList, start, {}, success);
    // }
  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {

  },

  editAddress: function (e) {
    var addr = e.currentTarget.dataset.item
    if (this.data.selected) {
      //获取页面栈
      var pages = getCurrentPages();
      if (pages.length > 1) {
        //上一个页面实例对象
        var prePage = pages[pages.length - 2];
        if (prePage.refreshAddr && typeof (prePage.refreshAddr) == "function") {
          prePage.refreshAddr(addr);
        }
      }
      wx.navigateBack();
    } else {
      wx.navigateTo({
        url: '/pages/myself/address/editAddress?addr=' + JSON.stringify(addr),
      })
    }
  },
  doeditAddress: function (e) {
    var addr = e.currentTarget.dataset.item
    wx.navigateTo({
      url: '/pages/myself/address/editAddress?addr=' + JSON.stringify(addr),
    })
  },
  //手指触摸动作开始 记录起点X坐标
  touchstart: function (e) {
    //开始触摸时 重置所有删除
    this.data.items.forEach(function (v, i) {
      if (v.isTouchMove)//只操作为true的
        v.isTouchMove = false;
    })
    this.setData({
      startX: e.changedTouches[0].clientX,
      startY: e.changedTouches[0].clientY,
      items: this.data.items
    })
  },
  //滑动事件处理
  touchmove: function (e) {
    var that = this,
      index = e.currentTarget.dataset.index,//当前索引
      startX = that.data.startX,//开始X坐标
      startY = that.data.startY,//开始Y坐标
      touchMoveX = e.changedTouches[0].clientX,//滑动变化坐标
      touchMoveY = e.changedTouches[0].clientY,//滑动变化坐标
      //获取滑动角度
      angle = that.angle({ X: startX, Y: startY }, { X: touchMoveX, Y: touchMoveY });
    that.data.items.forEach(function (v, i) {
      v.isTouchMove = false
      //滑动超过30度角 return
      if (Math.abs(angle) > 30) return;
      if (i == index) {
        if (touchMoveX > startX) //右滑
          v.isTouchMove = false
        else //左滑
          v.isTouchMove = true
      }
    })
    //更新数据
    that.setData({
      items: that.data.items
    })
  },
  /**
   * 计算滑动角度
   * @param {Object} start 起点坐标
   * @param {Object} end 终点坐标
   */
  angle: function (start, end) {
    var _X = end.X - start.X,
      _Y = end.Y - start.Y
    //返回角度 /Math.atan()返回数字的反正切值
    return 360 * Math.atan(_Y / _X) / (2 * Math.PI);
  },
  //删除事件
  del: function (e) {
    var index = e.currentTarget.dataset.index;
    var that = this;
    wx.showModal({
      title: '提示',
      content: '确定要删除该地址吗？',
      success: function (res) {
        if (res.confirm) {
          if (that.data.items[index].isDefault == 1) {
            wx.showToast({
              title: '不能删除默认地址！',
            })
          } else {
            network._post_json(that, api.delAddress, { addressId: that.data.items[index].id }, delSuccess);
            that.data.items.splice(index, 1)
            that.setData({
              items: that.data.items
            })
          }
        } else if (res.cancel) {
          console.log('用户点击取消')
        }
      }
    })

  },

  refresh: function () {
    // this.setData({
    //   items: []
    // })
    // network._post_json(this, api.getAddressList, {}, success);
    this.onPullDownRefresh();
  }
})

// 获取地址列表结果
var success = function (that, res) {
  if (res.data.data) {
    var address = res.data.data;
    for (var i = 0; i < address.length; i++) {
      address[i].isTouchMove = false;
    }
    that.setData({
      items: that.data.items.concat(res.data.data),
      recordsTotal: res.data.recordsTotal
    })
  }
}

// 删除收货地址成功
var delSuccess = function (that, res) {
  if (res.data.data) {
    wx.showToast({
      title: '地址删除成功',
    })
  }
}